src/test/ui/transmute/transmute-imut-to-mut.rs


1
2
3
4
5
6
7
8

// Tests that transmuting from &T to &mut T is Undefined Behavior.

use std::mem::transmute;

fn main() {
    let _a: &mut u8 = unsafe { transmute(&1u8) };
    //~^ ERROR mutating transmuted &mut T from &T may cause undefined behavior
}